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certbot/server-ca/daemon_common.py

30 lines
822 B
Python

#!/usr/bin/env python
# functions common to the various kinds of daemon
# TODO: define a log function that sends a pubsub message to the
# logger daemon
import time, binascii
from Crypto import Random
def signal_handler(a, b):
global clean_shutdown
clean_shutdown = True
r.publish("exit", "clean-exit")
r.lpush("exit", "clean-exit")
def short(session):
"""Return the first 12 bytes of a session ID, or, for a
challenge ID, the challenge ID with the session ID truncated."""
tmp = session.partition(":")
return tmp[0][:12] + "..." + tmp[1] + tmp[2]
def random():
"""Return 64 hex digits representing a new 32-byte random number."""
return binascii.hexlify(Random.get_random_bytes(32))
def random_raw():
"""Return 32 random bytes."""
return Random.get_random_bytes(32)